year = int(input("请输入年份："))
if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
    print("是闰年")
else:
    print("不是闰年")


year = int(input("请输入年份："))
if year % 4 == 0:
    if year % 100 != 0:
        print("是闰年")
    elif year % 400 == 0:
        print("是闰年")
    else:
        print("不是闰年")
else:
    print("不是闰年")